100G 40KM transceiver QSFP28 SR4 fiber optical module
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100G 40KM transceiver QSFP28 SR4 fiber optical module

100G 40KM transceiver QSFP28 SR4 fiber optical module
100G 40KM transceiver FEATURES
- Up to 27.952 Gbps Data rate per channel
- Maximum link length of 100m links on OM3 multimode fiber
- High Reliability 850nm VCSEL technology
- Electrically hot-pluggable
- Digital diagnostic SFF-8436 compliant
- Compliant with QSFP28 MSA
- Case operating temperature range:0°C to 70°C
- Power dissipation < 2.5 W
APPLICATIONS
- Data center
- Infiniband QDR
- Fiber channel
STANDARD
- Compliant to IEEE 802.3 bm
- Compliant to SFF-8436
- RoHS Compliant.
General Description
100G 40KM transceiver is designed for use in 100 Gigabit per second links over multimode fiber. They are compliant with the QSFP28 MSA and IEEE 802.3bm
QSFP28 SR4 transceiver portion of the transceiver incorporates a 4-channel VCSEL (Vertical Cavity Surface Emitting Laser) array, a 4-channel input buffer and laser driver, diagnostic monitors, control and bias blocks. For module control, the control interface incorporates a Two Wire Serial interface of clock and data signals. Diagnostic monitors for VCSEL bias, module temperature,received optical power and supply voltage are implemented and results are available through the TWS interface. Alarm and warning thresholds are established for the monitored attributes. Flags are set and interrupts generated when the attributes are outside the thresholds. Flags are also set and interrupts generated for loss of input signal (LOS) and transmitter fault conditions. All flags are latched and will remain set even if the condition initiating the latch clears and operation resumes. All interrupts can be masked and flags are reset by reading the appropriate flag register. The optical output will squelch for loss of input signal unless squelch is disabled. Fault detection or channel deactivation through the TWS interface will disable the channel. Status, alarm/warning and fault information are available via the TWS interface.
SFP28 transceiver optical receiver portion of the transceiver incorporates a 4-channel PIN photodiode array, a 4-channel TIA array, a 4 channel output buffer, diagnostic monitors, and control and bias blocks. Diagnostic monitors for optical input power are implemented and results are available through the TWS interface. Alarm and warning thresholds are established for the monitored attributes. Flags are set and interrupts generated when the attributes are outside the thresholds. Flags are also set and interrupts generated for loss of optical input signal (LOS). All flags are latched and will remain set even if the condition initiating the flag clears and operation resumes. All interrupts can be masked and flags are reset upon reading the appropriate flag register. The electrical output will squelch for loss of input signal (unless squelch is disabled) and channel de-activation through TWS interface. Status and alarm/warning information are available via the TWS interface.
Ⅰ Absolute Maximum Ratings
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Storage Temperature | Ts | -40 | – | 85 | ºC | |
Storage Ambient Humidity | HA | 5 | – | 95 | % | |
Operating Relative Humidity | RH | – | – | 85 | % | |
Power Supply Voltage | VCC | -0.3 | – | 4 | V | |
Signal Input Voltage | Vcc-0.3 | – | Vcc+0.3 | V | ||
Damage threshold | 3.4 | dBm |
Ⅱ Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Case Operating Temperature | Tcase | 0 | – | 70 | ºC | Without air flow |
Power Supply Voltage | VCC | 3.14 | 3.3 | 3.47 | V | |
Power Supply Current | ICC | – | 350 | mA | ||
Data Rate | BR | 10.3125 | Gbps | Each channel | ||
Transmission Distance | TD | – | 100 | m | OM3 MMF | |
150 | m | OM4 MMF |
Ⅲ Optical Characteristics
Parameter | Symbol | Min | Typ | Max | Unit | NOTE |
Transmitter | ||||||
Center Wavelength | λ0 | 840 | 860 | nm | ||
Average Launch Power each lane | -7.6 | -1 | dBm | |||
Spectral Width (RMS) | σ | 0.65 | nm | |||
Optical Extinction Ratio | ER | 3 | dB | |||
Average launch Power off each lane | Poff | -30 | dBm | |||
Transmitter and Dispersion Penalty each lane | TDP | 3.5 | dB | |||
Optical Return Loss Tolerance | ORL | 12 | dB | |||
Output Eye Mask | Compliant with IEEE 802.3ba | |||||
Receiver | ||||||
Receiver Wavelength | Λin | 840 | 860 | nm | ||
Rx Sensitivity per lane | RSENS | -9.5 | dBm | 1 | ||
Input Saturation Power (Overload) | Psat | 2.4 | dBm | |||
Receiver Reflectance | Rr | -12 | dB | |||
LOS De-Assert | LOSD | -12 | dBm | |||
LOS Assert | LOSA | -30 | dBm | |||
LOS Hysteresis | 0.5 | dBm |
Notes:
1. Measured with a PRBS 231-1 test pattern, @10.325Gb/s, BER<10-12 .
IV. Electrical Characteristics
Parameter | Symbol | Min | Typ | Max | Unit | NOTE |
Supply Voltage | Vcc | 3.14 | 3.3 | 3.46 | V | |
Supply Current | Icc | 350 | mA | |||
Transmitter | ||||||
Input differential impedance | Rin | 100 | Ω | 1 | ||
Differential data input swing | Vin,pp | 180 | 1000 | mV | ||
Single ended input voltage tolerance | VinT | -0.3 | 4.0 | V | ||
Receiver | ||||||
Differential data output swing | Vout,pp | 300 | 850 | mV | 2 | |
Single-ended output voltage | -0.3 | 4.0 | V |
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